Product Design Engineer – Scientific Instruments & Opto-Mechanical Systems.

Plasti Surge Industries Pvt Ltd; Amravati; On-site; INR 600,000 - 800,000; Full time

Job summary

Plasti Surge Industries Pvt Ltd invites a hands-on Product Design Engineer to design and develop scientific instruments and environmental-monitoring products. You will handle complete physical design, including optical systems, mechanical enclosures and integration of electronics, sensors and UI components.

The role requires converting functional concepts into working prototypes, with a path to manufacturability and commercial deployment.

Qualifications

• Bachelor’s or Master’s degree in Mechanical Engineering, Mechatronics, Instrumentation Engineering, Product Design, Optical Engineering or a related discipline.
• Relevant experience in mechanical product design and development.
• Strong proficiency in 3D CAD modelling and mechanical assemblies.
• Understanding of materials, manufacturing processes, tolerances and component fitment.
• Experience developing functional prototypes and testing design iterations.
• Ability to integrate mechanical, electronic and optical components within compact instruments.
• Strong problem-solving, documentation and project-execution skills.

Responsibilities

• Develop product concepts, system layouts and detailed mechanical designs for scientific instruments.
• Design opto-mechanical assemblies for photometric, optical and sensor-based measurement systems.
• Support the selection and integration of light sources, detectors, lenses, filters and other optical components.
• Design optical chambers, mounts, holders and alignment mechanisms while controlling ambient light and internal reflections.
• Design mechanical enclosures incorporating PCBs, sensors, displays, batteries, printers, connectors and other components.
• Create 3D CAD models, assemblies, engineering drawings and manufacturing specifications.
• Develop prototypes using 3D printing, CNC machining and other rapid-prototyping methods.
• Evaluate materials, tolerances, sealing, ergonomics, durability and environmental protection requirements.
• Apply Design for Manufacturing and Design for Assembly principles.
• Support enclosure development for injection moulding, vacuum forming, sheet metal or other manufacturing processes.
• Conduct fitment, alignment, tolerance and functional testing of prototypes.
• Work closely with electronics, firmware, chemistry, software and manufacturing teams.
• Coordinate with component suppliers, toolmakers, mould manufacturers and fabrication vendors.
• Prepare bills of materials, drawings, revision records and technical documentation.
• Support pilot production, troubleshooting, design improvements and transfer to manufacturing.
• Protect confidential product designs, technical information and intellectual property

Skills

3D CAD modelling

Mechanical design

Prototyping

Multidisciplinary collaboration

Education

Bachelor’s or Master’s degree in Mechanical Engineering/Mechatronics/Instrumentation/Product Design/Optical Engineering

Tools

CAD software (SolidWorks)

Optical design software ( Zemax OpticStudio )

3D printing equipment

Job description

Product Design Engineer - Scientific Instruments & Opto-Mechanical Systems

Employment Type: Full-time, On-site

Experience: Preferably 2-5 years

Department: Product Development and R&D

About the Role

We are looking for a hands-on Product Design Engineer to design and develop scientific instruments and environmental-monitoring products.

The selected candidate will work on the complete physical design of products, including optical systems, instrument architecture, mechanical components, enclosures and integration of electronics, sensors and user-interface components.

This role requires someone who can convert a functional concept into a working prototype and subsequently into a reliable, manufacturable and commercially deployable product.

Key Responsibilities

• Develop product concepts, system layouts and detailed mechanical designs for scientific instruments
• Design opto-mechanical assemblies for photometric, optical and sensor-based measurement systems
• Support the selection and integration of suitable light sources, detectors, lenses, filters and other optical components
• Design optical chambers, mounts, holders and alignment mechanisms while controlling ambient light and internal reflections
• Design mechanical enclosures incorporating PCBs, sensors, displays, batteries, printers, connectors and other components
• Create 3D CAD models, assemblies, engineering drawings and manufacturing specifications
• Develop prototypes using 3D printing, CNC machining and other rapid-prototyping methods
• Evaluate materials, tolerances, sealing, ergonomics, durability and environmental protection requirements
• Apply Design for Manufacturing and Design for Assembly principles
• Support enclosure development for injection moulding, vacuum forming, sheet metal or other suitable manufacturing processes
• Conduct fitment, alignment, tolerance and functional testing of prototypes
• Work closely with electronics, firmware, chemistry, software and manufacturing teams
• Coordinate with component suppliers, toolmakers, mould manufacturers and fabrication vendors
• Prepare bills of materials, drawings, revision records and technical documentation
• Support pilot production, troubleshooting, design improvements and transfer to manufacturing
• Protect confidential product designs, technical information and intellectual property

Required Qualifications

• Bachelor’s or master’s degree in Mechanical Engineering, Mechatronics, Instrumentation Engineering, Product Design, Optical Engineering or a related discipline
• Relevant experience in mechanical product design and development
• Strong proficiency in 3D CAD modelling and mechanical assemblies
• Understanding of materials, manufacturing processes, tolerances and component fitment
• Experience developing functional prototypes and testing design iterations
• Ability to integrate mechanical, electronic and optical components within compact instruments
• Strong problem-solving, documentation and project-execution skills

Preferred Technical Skills

• Geometric dimensioning and tolerancing
• 3D printing, CNC machining and rapid prototyping
• Injection-moulded plastic-part design and tooling coordination
• Optical component selection and basic optical-system design
• Ray-tracing or optical-simulation software such as Zemax OpticStudio, TracePro or equivalent
• Design of light-tight optical assemblies and precision component mounts
• IP-rated enclosure design, gaskets, sealing and environmental protection
• Thermal management and electronic-component packaging
• Design for Manufacturing and Design for Assembly
• Prototype validation, tolerance analysis and design-failure investigation

Preferred Industry Exposure

• Analytical or laboratory instruments
• Photometers, colorimeters or spectrophotometric systems
• Environmental-monitoring or water-testing equipment
• Medical or diagnostic devices
• Portable electronic instruments
• Sensor-based or IoT hardware products
• Industrial instrumentation

Candidate Profile

• Enjoys building and testing physical products
• Can move from concept sketches to CAD, prototype and production
• Understands that product design involves functionality, accuracy and manufacturability - not only appearance
• Can independently troubleshoot mechanical and opto-mechanical problems
• Works effectively with multidisciplinary technical teams
• Can manage vendors and follow prototypes through multiple design iterations
• Maintains proper drawings, records and version control
• Is willing to travel when required for technical collaboration, prototyping or vendor development

Location Requirement

This is a full-time, on-site position based in Amravati, Maharashtra.

Candidates should apply only if they are currently based in Amravati or are genuinely willing to relocate and work from Amravati.

Application Requirements

• Examples of CAD models, prototypes or instruments personally developed
• Brief explanation of their contribution to each project
• Details of CAD and simulation software used
• Current location, notice period and compensation expectations